Zipit Z2: Difference between revisions

Revision as of 00:50, 1 February 2016

Zipit Wireless Messenger Z2

Participants	Anus, User:buzz
Skills	We'll see
Status	Planning
Niche
Purpose
Tool	No
Location
Cost
Tool category

Zipit Wireless Messenger Z2

zipit-vanity2.jpg {{#if:No | [[Tool Owner::{{{ProjectParticipants}}} | }} {{#if:No | [[Tool Cost::{{{Cost}}} | }}

Specs

PXA270 @ ~100-450Mhz
32MB RAM, 8MB Flash, MiniSD slot
2.8" 320x240 screen
802.11bg wifi, Audio (also input), USB host&otg (on weird connector)
Backlit keyboard <3

Mods

Battery

It turns out that a Nokia BP-4L LiPo battery fits perfectly. without any modifications to the case. Uncertain if thermistor matches specs, but it does seem to charge. As an added advantage, this battery is 1500mAh instead of stock 1250mAh.

Update to battery mod;

Mozzwald made this script ; http://mozzwald.com/zipit/openwrt/chrgstat which showed that the battery wasn't charging at all.

Measuring the thermistor leads from the Nokia battery showed me it had a 119k resistance at roomtemperature, way too high for the charge circuit. I now put just a 9.1K resistor between the thermistor lead and GND, and, its charging \o/

http://www.ti.com/lit/ds/symlink/bq24030.pdf documentation for the charging circuit.

openwrt build

Just to mess around, i went to build openwrt.

https://github.com/openwrt-zipit/openwrt-zipit

Removed all feeds, set these ones;

Needed to do some mods to m4 and bison; (can only do this after failing first)

build_dir/host/bison-2.4.3/lib/stdio.h
build_dir/host/m4-1.4.16/lib/stdio.h

/*_GL_WARN_ON_USE (gets, “gets is a security hole – use fgets instead”);*/ 
#define gets(a) fgets( a, sizeof(*(a)), stdin)

Also disabled the makeinfo in gcc

MAKEINFO=missing

On alsa-lib i needed to edit package/feeds/zipit/alsa-lib/Makefile to get;

DEPENDS:=@AUDIO_SUPPORT +librt +libpthread

For ncmpc i need to add some depends aswell;

+glib2 +libncursesw

In openwrt's config this needs to be enabled to pull in real iconv;

CONFIG_BUILD_NLS

Some hints from mozzwald;

23:28:12 < mozzwald> here's the script I use when doing a full build
23:28:14 < mozzwald> http://pastebin.com/NSz40thL

00:38:57 < mozzwald> deeice: make IGNORE_ERRORS=1
00:39:15 < mozzwald> should skip over anything that won't build

Storage idea

USB3.0 mSATA adapter (should have USB1.1 fallback)
small/secondhand mSATA SSD (32GB is ~30 euro new)
right connector back to usb
5V dc? maybe it could run on lower voltage .. 3.3 would be nice
maybe some gpio thingy to switch off/on

This setup should give me ~1MB/sec storage, with proper wear levelling. Nice upgrade from the SD storage, which is just ~500kb/sec and has poor wear levelling.

It would kinda depend on the ability to make a replacement for the bottom case. Maybe i can convince some 3D modeller to just clone the case design? hmm

Links

dump of stuff i need/want to save on http://space.nurdspace.nl/~buzz/zipit/

Pics

@@ Line 89: / Line 89: @@
 This setup should give me ~1MB/sec storage, with proper wear levelling. Nice upgrade from the SD storage, which is just ~500kb/sec and has poor wear levelling.
+It would kinda depend on the ability to make a replacement for the bottom case. Maybe i can convince some 3D modeller to just clone the case design? hmm
 == Links ==